Memory hierarchy pyramid — SRAM, DRAM, HBM, HBF, SSD

Understanding Memory: Essential Commodity of the AI Era — Part 1: Understanding HBF

Why are there so many types of memory, and where does HBF fit in? From SRAM to HBF, we explore the physical principles behind the memory hierarchy and the technical architecture of HBF.

April 23, 2026 · 14 min · 2935 words
ICMS and Bluefield-4 DPU

Know Your Enemy, Know Yourself, Part 4: Memory Capacity Bottleneck and NVIDIA ICMS

We explore the technical principles behind NVIDIA’s ICMS — a new storage tier designed to solve the KV cache capacity bottleneck in LLMs — and the Bluefield-4 DPU that manages it.

February 24, 2026 · 12 min · 2456 words
groq logo

Know Your Enemy, Know Yourself, Part 3: Groq's LPU (Acquired by NVIDIA for $20B)

We explore the background of Groq and LPU, their hardware/software design philosophy, and analyze NVIDIA’s intentions behind acquiring Groq.

February 3, 2026 · 20 min · 4156 words
TPU7X Ironwood image

Know Your Enemy, Know Yourself, Part 2 : TPU Emergence and Rise

We explore the background of TPU’s emergence and analyze Google’s AI semiconductor strategy by examining its hardware and software architecture.

January 3, 2026 · 18 min · 3673 words